شبیهسازی هیدرولیک و هیدرودینامیک سیلاب در تالاب آقگل با استفاده از مدل (HEC-RA)
عنوان مقاله English
Simulation of hydraulics and hydrodynamics of flood in Aghgol wetland using model (HEC-RA)
نویسنده English
Floods every year cause the destruction of the economic and social structure of societies and cause financial and human losses. As a result of climate changes, during recent decades, the country of Iran with its hot, dry and semi-arid climate has been prone to floods. The purpose of this research is to simulate the hydraulics and hydrodynamics of flood in Aghgol wetland using HEC-RAS model. To achieve this goal, two scenarios have been considered. First: Wetland as a water storage area, which enters as two sub-branches into the waterway and Khoruchi of the Wetland and flows out from the north of the Wetland. Second: Wetland as a very wide river. Next, the flood discharge of the basin was simulated using two scenarios with return periods of 2, 10, 25 and 100 years using the HEC-HMS hydrological model. The results showed that, like rivers, the occurrence of floods with a return period of 100 years in the study area will be attributed to flooding of many parts of the lagoon shores, compared to 25-year floods. Also, based on the relations of reservoir calculations, if a flood enters the reservoir which is supposed to be full of water, first some of the volume of the flood is temporarily stored in the reservoir and then it is gradually released. This causes the displacement of the peak flow of the hydrograph and its drop, so that the hydrograph leaving the reservoir has a lower peak and at the same time, its occurrence is postponed.
کلیدواژهها English
- Echogdali, C., Hou, X., Zheng, Q., Xu, H., Li, D., Donnici, S., and Tang, C. 2022. Emerging signals of coastal system changes under rapid anthropogenic disturbance in Hangzhou Bay. China. Ecological Indicators. 146: 109816.
- Fluet-Chouinard, E., Stocker, B.D., Zhang, Z., Malhotra, A., Melton, J.R., Poulter, B., Kaplan, J.O., Goldewijk, K.K., Siebert, S., Minayeva, T., Hugelius, G., Joosten, H., Barthelmes, A., Prigent, C., Aires, F., Hoyt, A.M., Davidson, N., Finlayson, C.M., Lehner, B., Jackson, R.B., and Mcintyre, P.B. 2023. Extensive global wetland loss over the past three centuries.614: 281–286.
- Guide for flood zoning and determination of river bed limits and boundarie. 2009. Deputy Planning and Strategic Monitoring, Publication. 307: 22-25.
- Khairizadearooq, M., Rezaei Moghadam, M., Rajabi, M., and Daneshfaraz, R. 2016. Analysis of the lateral changes of the Zarinerood river channel using geomorphological methods. Quantitative geomorphology research. 4:76-102. (In Persin).
- Haeri, S., and Masnavi, M.R. 2023. Analysis of strategies for ecological improvement of Shiraz dry river landscape in the framework of sustainable urban development with emphasis on flood risk management, Natural Risk Management, 10: 71-90. (In Persin).
- Hayashi, M., Van der Kamp, G., and Rosenberry, D.O. 2016. Hydrology of prairie wetlands: understanding the integrated surface-water and groundwater processes. Wetlands. 36: 237–254.
- Hunt, R.J., Walker, J.F., and Krabbenhoft, D.P. 1999. Characterizing hydrology and the importance of ground-water discharge in natural and constructed wetlands. Wetlands. 19: 458–472.
- Laighi, S., and Karam, A. 2013. Hydrogeomorphological classification of Jajroud river with Rosegen model. Quantitative geomorphology research. 3: 130-143.
- Nagib Hegazy, D., Wang, Z., Du, B., Li, L., Tian, Y., Jia, M., and Wang, Y. 2022. National wetland mapping in China: A new product resulting from object-based and hierarchical classification of Landsat 8 OLI images. ISPRS Journal of Photogrammetry and Remote Sensing. 164, 11–25.
- Rahimi, M. 2016. Investigating the effect of land use changes on the morphology of Qarasu river channel from Sablan dam to the confluence of Ahar Chai river. Supervisor: Mohammad Hossein Rezaei Moghadam, Faculty of Planning and Environmental Sciences, Tabriz University.
- Rezaei Moghadam, M.H., Ashuri, M., and Piri, Z. 2012. Investigating the change of the morphology of the river bed after the construction of the dam using HEC RAS-GIS (downstream of the Sattar Khan Dam). Natural geography research. 1: 87-100. (In Persin).
- Rezaei Moghadam, M. H., Yasi, M., Nik Jo, M. R., and Rahimi, M. 2017. Zoning and morphological analysis of Qarasu river floods using HEC-RAS hydrodynamic model (from Pirazmian village to the confluence of Ahar Chai river). Geography and environmental hazards. 25: 1-15.
- Ramsar Convention On Wetlands 2018. Global Wetland Outlook: State of the World’s Wetlands and their Services to People. Ramsar Convention Secretariat, Gland, Switzerland.
- Statistical yearbook of the country's water, 1381-1393, Deputy Water and AIFA, Ministry of Energy, Tehran.
- Yasi, M. 2014. textbook of hydraulics of open channels, Master's course of hydraulic structures, Urmia University.
Yamani, M., Torani, M., and Chazgeh, S. 2019. Determining flood zones using HEC-RAS model (upstream of Taleghan River). Geography and environmental hazards. 1: 1-16. (In Persin).
